Hello, my sym fiddle 2 doesn’t start any more. First he always went on without any problems, then he came up with it during the ride, when I slowed down or braked off on my own, but then jumped on again without any problems. And now all of a sudden he doesn’t want to jump any more, not over E and also not over kickstarter. Engine oil was changed first, spark plug we checked, which gives me another spark. Could someone tell me what that might be about? can still check? Thank you and many greetings